It is very important for English teachers to have a knowledge of the theories of language_______.
The boss refused to sell the car for ________ he thought was not satisfactory.
________ wants to stay in a hotel has to pay their own way.
—Can we get everything ready by the weekend? —It all depends on ________ we can get Mr.Green’s cooperation.
He noticed that the straight part of the dance was different in the afternoon from ________ it had been in the morning.
The shopkeeper did not want to sell for ________ he thought was not enough.